Toothbrush



FIG. 1 is a perspective view of a toothbrush showing our new design;

FIG. 2 is a front elevational view thereof, the rear being a mirror image;

FIG. 3 is an end elevational view as seen from the right of FIG. 1;

FIG. 4 is an elevational view of the opposite end thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a top plan view thereof. 

The ornamental design for a toothbrush, as shown and described. 